Certainly Oxford has oodles of bus services and is investing about £80m in new electric buses. The problem is that the buses get stuck in the congestion, which is why the next stage of the Oxford traffic works is to restrict driving across the city.
Indeed, last time I visited I used the Headington park and ride bus, which then sat for ages in St Clements as traffic queued up at Magdalen Bridge roundabout. How much of that traffic could have gone around the ring road or the Marston ferry road etc - quite a lot I suspect.
But to drive that change in behaviour for people to go "round and then in" you have to make it damn inconvenient
To make people walk into instead of jumping into the urban 4x4 you have to make it damn inconvenient
it does appear to be slowly working though, when a LTN restriction is put in, apparently the increase in traffic on surrounding trunk route is much less than the decrease in traffic in the rat run.
When I commuted into London I used to drive to my local station, then parking charges increased so i parked 5-10 mins walk away and thn that got residnets restrictions so i did what I should have done and cycled home to station.
yes some days it was wet, but surprisingly few, and I used to have dry clothes and shoes in office, so even in the days before office showers I could freshen up on arrival. It wasn't like it was a long enough hop to get sweaty. I then fell out of love with the tube, work moved to a place with showers, so got a Brommie and showered on arrival at work.